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comparison: js/src/jit-test/tests/debug/Frame-onStep-lines-01.js
js/src/jit-test/tests/debug/Frame-onStep-lines-01.js
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| -1:000000000000 | 0:588c0739407a |
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| 1 // Test that a frame's onStep handler gets called at least once on each line of a function. | |
| 2 | |
| 3 var g = newGlobal(); | |
| 4 var dbg = new Debugger(g); | |
| 5 | |
| 6 // When we hit a 'debugger' statement, set offsets to the frame's script's | |
| 7 // table of line offsets --- a sparse array indexed by line number. Begin | |
| 8 // single-stepping the current frame; for each source line we hit, delete | |
| 9 // the line's entry in offsets. Thus, at the end, offsets is an array with | |
| 10 // an element for each line we did not reach. | |
| 11 var doSingleStep = true; | |
| 12 var offsets; | |
| 13 dbg.onDebuggerStatement = function (frame) { | |
| 14 var script = frame.script; | |
| 15 offsets = script.getAllOffsets(); | |
| 16 print("debugger line: " + script.getOffsetLine(frame.offset)); | |
| 17 print("original lines: " + uneval(Object.keys(offsets))); | |
| 18 if (doSingleStep) { | |
| 19 frame.onStep = function onStepHandler() { | |
| 20 var line = script.getOffsetLine(this.offset); | |
| 21 delete offsets[line]; | |
| 22 }; | |
| 23 } | |
| 24 }; | |
| 25 | |
| 26 g.eval( | |
| 27 'function t(a, b, c) { \n' + | |
| 28 ' debugger; \n' + | |
| 29 ' var x = a; \n' + | |
| 30 ' x += b; \n' + | |
| 31 ' if (x < 10) \n' + | |
| 32 ' x -= c; \n' + | |
| 33 ' return x; \n' + | |
| 34 '} \n' | |
| 35 ); | |
| 36 | |
| 37 // This should stop at every line but the first of the function. | |
| 38 g.eval('t(1,2,3)'); | |
| 39 assertEq(Object.keys(offsets).length, 1); | |
| 40 | |
| 41 // This should stop at every line but the first of the function, and the | |
| 42 // body of the 'if'. | |
| 43 g.eval('t(10,20,30)'); | |
| 44 assertEq(Object.keys(offsets).length, 2); | |
| 45 | |
| 46 // This shouldn't stop at all. It's the frame that's in single-step mode, | |
| 47 // not the script, so the prior execution of t in single-step mode should | |
| 48 // have no effect on this one. | |
| 49 doSingleStep = false; | |
| 50 g.eval('t(0, 0, 0)'); | |
| 51 assertEq(Object.keys(offsets).length, 6); | |
| 52 doSingleStep = true; | |
| 53 | |
| 54 // Single-step in an eval frame. This should reach every line but the | |
| 55 // first. | |
| 56 g.eval( | |
| 57 'debugger; \n' + | |
| 58 'var a=1, b=2, c=3; \n' + | |
| 59 'var x = a; \n' + | |
| 60 'x += b; \n' + | |
| 61 'if (x < 10) \n' + | |
| 62 ' x -= c; \n' | |
| 63 ); | |
| 64 print("final lines: " + uneval(Object.keys(offsets))); | |
| 65 assertEq(Object.keys(offsets).length, 1); | |
| 66 | |
| 67 // Single-step in a global code frame. This should reach every line but the | |
| 68 // first. | |
| 69 g.evaluate( | |
| 70 'debugger; \n' + | |
| 71 'var a=1, b=2, c=3; \n' + | |
| 72 'var x = a; \n' + | |
| 73 'x += b; \n' + | |
| 74 'if (x < 10) \n' + | |
| 75 ' x -= c; \n' | |
| 76 ); | |
| 77 print("final lines: " + uneval(Object.keys(offsets))); | |
| 78 assertEq(Object.keys(offsets).length, 1); |
